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Behavior of Coke in the Higashida No.5 Blast Furnace

1971; Japan Institute of Energy; Volume: 50; Issue: 8 Linguagem: Inglês

10.3775/jie.50.8_645

2185-226X

Shiro Ida, Toru Nishi, Hiroshi Nakama,

Iron and Steelmaking Processes

This research was performed for the purpose of establishing valuation of characteristic of coke. The usual research on the behavior of coke in B.F. had many indistinct things because of inaccurate sampling methods. Higashida No.5 B.F. at Yawata Iron and Steel Works was quenched by 3800 tons of water in normal operating conditions, broken and the sample was picked from each part of B.F. and the behavior of coke in B.F. was measured.(1) Behavior of coke in B.F. was changed from the middle of shaft, especially, this change of characteristic of coke in shaft was influenced with alkali materials.(2) The characteristic of coke in softening and melting zone was showed the quick chang- es and it tuyere zone was showed considerable changes.(3) The changes of characteristic of coke in the wall side part was larger than other parts.(4) Desulphurization of cokes began from the lower of shaft and sulphur of cokes in tuyere zone was desulphurized about 30%.As a result, we think that we are going to make clear the behavior of coke in shaft, softening, meltimg and tuyere zone on the bench scall experiment and we must establish the method of valuation of characteristic of coke on the base of this result.